Harry Brown is a 2009 British vigilante action-thriller film directed by Daniel Barber and starring Michael Caine, Emily Mortimer, Jack O'Connell, and Liam Cunningham. The story follows Harry Brown, a widowed Royal Marines veteran who had served in Northern Ireland during The Troubles, living on a London housing estate that is rapidly descending into youth crime. After a violent gang murders his friend, Harry decides to take justice into his own hands.

Sir Michael Caine is an English retired actor. Known for his distinctive Cockney accent, he has appeared in more than 160 films over a career spanning eight decades and is considered a British film icon. He has received numerous awards including two Academy Awards, a BAFTA Award, three Golden Globe Awards, and a Screen Actors Guild Award. As of 2017, the films in which Caine has appeared have grossed over $7.8 billion worldwide. Caine is one of only five male actors to be nominated for an Academy Award for acting in five different decades. In 2000, he received a BAFTA Fellowship and was knighted by Queen Elizabeth II.